We have a Chantecler / americauna cross that was born at the end of march & just started laying about 3 weeks ago - now for the past couple days she is spending most of the time sitting in a nest box. Seems a little young to be broody, or is that typical for a pullet less than 6 months old to act broody? the only other thing is we'e added a couple young cockerels into the group of 11, & maybe the change has disrupted her.